CN111594393A - Reliability test device for large-megawatt wind power cabin cover - Google Patents
Reliability test device for large-megawatt wind power cabin cover Download PDFInfo
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- CN111594393A CN111594393A CN202010435757.9A CN202010435757A CN111594393A CN 111594393 A CN111594393 A CN 111594393A CN 202010435757 A CN202010435757 A CN 202010435757A CN 111594393 A CN111594393 A CN 111594393A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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Abstract
The invention relates to a reliability test device for a large-megawatt wind power engine room cover, which comprises a device body, wherein the device body is provided with a fixed platform and a rotating platform, the rotating platform is positioned at the upper part of the fixed platform, and the outer side of the rotating platform is used for installing the engine room cover; the middle part of the bottom surface of the rotating platform is rotationally connected with the fixed platform through a connecting mechanism, and two sides of the bottom surface of the rotating platform, which are used for rotational movement, are also respectively connected with the fixed platform through a plurality of groups of elastic supporting assemblies and at least one group of telescopic driving mechanisms; the reliability test device is reasonable in structural design, can simulate severe environments such as strong wind, rain, snow and vibration, can detect the fatigue damage mode of the cabin cover, and is beneficial to predicting and evaluating the fatigue life and the reliability.
Description
Technical Field
The invention relates to the technical field of wind power generation test equipment, in particular to a reliability test device for a large-megawatt wind power cabin cover.
Background
The engine room cover is one of main parts of the wind generating set, and plays roles of wind shielding, rain shielding and ultraviolet protection for the wind generating set so as to ensure the normal operation of the wind generating set. The nacelle cover assembly is typically mounted on a (70-80) meter tower, and the nacelle cover needs sufficient structural strength to accommodate outdoor storm, lightning, rain and snow weather conditions. Particularly, the connection part of the cabin cover and the rack platform is influenced by the integral vibration of the cabin cover, the pre-embedded supporting seat on the cabin cover sheet body is damaged by repeated and alternating loads, and the strength of the cabin cover sheet body in the damage process under the action of the loads is lower than the static strength of the cabin cover sheet body.
The technical maturity of the existing small and medium-sized engine room covers is higher, and most of the existing small and medium-sized engine room covers are land machine types, the structural strength defect of the engine room covers occurs, the maintenance is convenient, and the maintenance cost is lower. Most of the large megawatt wind generating sets are offshore, the engine room cover has structural strength defects, the maintenance is inconvenient, and the maintenance cost of the single engine room cover is very high. The cooling system and the helicopter hovering platform interface are additionally arranged on the large-megawatt cabin cover, higher requirements are provided for the structural strength of the cabin cover, the static strength of the large-megawatt cabin cover is accurately analyzed by utilizing the existing CAE software means, but the repeated and alternating loads cannot be accurately simulated, a device for performing reliability test on the wind power cabin cover is not available in the existing market, a large-megawatt cabin cover reliability test device needs to be developed to test the reliability of the cabin cover in the whole life cycle, test data are collected, the failure mode of the large-megawatt cabin cover is researched, and a basis is provided for optimizing the structural design.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a reliability test device for a large-megawatt wind power engine room cover, which can effectively solve the problem that the engine room cover in the prior art cannot be subjected to a loading test.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a big megawatt wind-powered electricity generation cabin cover reliability test device, includes the device body, its characterized in that: the device body comprises a fixed platform and a rotating platform, wherein the rotating platform is positioned at the upper part of the fixed platform, and the outer side of the rotating platform is used for installing an engine room cover;
the middle of the bottom surface of the rotary platform is rotatably connected with the fixed platform through a connecting mechanism, and two sides of the bottom surface of the rotary platform, which are used for rotating and moving, are respectively connected with the fixed platform through a plurality of groups of elastic supporting assemblies and at least one group of telescopic driving mechanisms.
The fan housing is respectively positioned at two sides of the rotary platform and towards the air outlet of the fan housing, and the rotary platform is arranged.
The fan body adopts a variable speed fan.
Still included the trickle system, the trickle system is including being located the trickle support in device body upper portion and outside is equipped with the trickle pipe rather than being connected on the trickle support, and the trickle pipe lower part is equipped with a plurality of shower heads rather than being connected, and the shower head is located rotary platform upper portion.
The bottom of the device body is located in a water collecting tank, and the water spraying pipe is connected with the water collecting tank through a water pump.
The connecting mechanism comprises a rotating shaft and a plurality of bearing supports which are rotatably connected with the outer side of the rotating shaft, two ends of the rotating shaft are respectively connected with the fixed platform, and the bearing supports are connected with the bottom surface of the rotating platform.
The outer side of the rotating platform is provided with a plurality of supporting seats connected with the rotating platform, and the supporting seats are used for being connected with the inner wall of the cabin cover.
Still included pressure sensor and displacement sensor, pressure sensor and displacement sensor installation are fixed on the fixed platform, pressure sensor and displacement sensor are located rotary platform both sides edge lower part, and pressure sensor and displacement sensor's operation tip with rotary platform bottom surface contact is connected.
The pressure sensor and the displacement sensor are respectively installed and fixed on a side support, and the side support is fixedly connected with the fixed platform.
The aircraft cabin cover further comprises a counterweight layer, and the counterweight layer is placed on the top surface of the cabin cover.
The counterweight layer comprises a plurality of bagged quartz sand, the bagged quartz sand is bound on the cabin cover, and the thickness of the counterweight layer is 30-200 mm.
The invention has the beneficial effects that: structural design is reasonable, and the reliability test device can realize simulating adverse circumstances such as strong wind, sleet, vibration, can detect the form of cabin cover fatigue destruction, is favorable to predicting and assessing fatigue life and reliability.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic front view of the present invention.
FIG. 2 is a schematic view of an axial measurement structure according to the present invention.
Fig. 3 is a schematic axial view of the blower system.
Fig. 4 is a partial structural view of "a" in fig. 1.
In the figure: 100 rotating platforms, 101 supporting seats, 200 fixing platforms, 201 side supports, 202 pressure sensors, 203 displacement sensors, 204 telescopic driving mechanisms, 205 elastic supporting components, 301 rotating shafts, 302 bearing supports, 401 fan bodies, 402 air pipes, 403 fan covers, 500 cabin covers, 601 water spraying supports, 602 water spraying pipes, 603 spray headers, 604 water pumps, 700 water collecting tanks, 800 test control systems and 900 weight layers.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
According to the description of fig. 1 to 4: the embodiment provides a big megawatt wind-powered electricity generation cabin cover reliability test device, including the device body, device body fixed platform 200, rotary platform 100, air supply system and water drenching system, wherein fixed platform 200, rotary platform 100 interconnect constitute the whole that is used for assembling cabin cover 500 to possess functional component such as vibrations, data acquisition, and air supply system and water drenching system are located the cabin cover 500 outside respectively and are used for providing test condition, and the concrete implementation condition of above each subassembly is as follows.
The rotating platform 100 is positioned at the upper part of the fixed platform 200, a plurality of supporting seats 101 connected with the rotating platform 100 are arranged on the outer side of the rotating platform 100, the supporting seats 101 are arranged towards the outer side, the arrangement positions and the number of the supporting seats 101 are consistent with the assembly requirements of the nacelle cover, the supporting seats 101 are used for being connected with the inner wall of the nacelle cover 500, the nacelle cover 500 is produced and respectively formed by a plurality of sheet bodies, embedded parts are prefabricated in the sheet bodies, the supporting seats 101 are connected with the embedded parts through bolts and used for keeping the sheet bodies fixed respectively, the assembly mode of the nacelle cover assembly and the wind turbine generator frame is simulated, after the nacelle cover 500 is assembled, the rotating platform 100 is covered in the whole nacelle cover 500, and the fixed platform 200 enters the nacelle cover 500 at the air duct assembly opening position at the bottom of the nacelle cover 500 and is connected with the rotating platform 100;
further, the middle of the bottom surface of the rotating platform 100 is rotatably connected with the fixed platform 200 through a connecting mechanism, the connecting mechanism includes a rotating shaft 301 and a plurality of bearing supports 302 rotatably connected with the outer side of the rotating shaft 301, the rotating shaft 301 is distributed along the length direction of the nacelle cover 500, that is, the front end of the rotating shaft 301 and the opening position of the nacelle cover 500 for connecting with the hub cover are correspondingly arranged, two ends of the rotating shaft 301 are respectively connected with the fixed platform 200, so that the rotating shaft 301 and the fixed platform 200 form an integral structure, and the bearing supports 302 are connected with the bottom surface of the rotating platform 100, so that the rotating platform 100 can rotate a certain angle around the center line of the rotating shaft 301; meanwhile, the left side and the right side of the bottom surface of the rotating platform 100, which are used for rotary motion, are respectively connected with the fixed platform 200 through a plurality of groups of elastic supporting components 205 and a group of telescopic driving mechanisms 204, the elastic supporting components 205 adopt spring supports, and are integrally and uniformly installed and fixed on the top surfaces of the two sides of the fixed platform 200, the top surfaces of the elastic supporting components 205 are abutted against the bottom surface of the rotating platform 100, the elastic supporting components 205 are used for supporting and limiting the rotating platform 100, the telescopic driving mechanisms 204 adopt electric push rods, the two ends of the telescopic driving mechanisms 204 are respectively connected with the fixed platform 200 and the rotating platform 100 through spherical hinge structures, the telescopic driving mechanisms 204 drive the rotating platform 100 to rotate around the central line of the rotating shaft 301, the telescopic driving mechanisms 204 take the horizontal direction as the reference, the vertical direction has a stroke of 30-80mm, and the periodic amplitude and frequency are loaded through a single point, the nacelle cover 500 is vibrated periodically to simulate the vibration conditions on the tower created by the nacelle cover 500.
Air supply system include fan body 401 and with a plurality of fan housings 403 that fan body 401's air outlet is connected, fan body 401 adopts the variable speed fan, makes its wind speed adjustable, and the fan body 401 of the 500 left and right sides in cabin cover is equipped with three groups respectively, and every fan body 401 of group passes through tuber pipe 402 with two sets of fan housings 403 that correspond respectively and is connected fixedly, fan housing 403 is located respectively the left and right sides of rotary platform 100 and the air outlet orientation of fan housing 403 rotary platform 100 sets up, and the wind speed scope that single fan body 401 provided is at 10-60m/s, and the air supply area of six fan housings 403 with one side covers 500 overall dimension in cabin cover, through the control of air supply system wind speed, amount of wind, wind direction to simulation cabin cover 500 receives the state under the wind load.
The water spraying system comprises water spraying supports 601 which are positioned at the upper part and the outer side of the device body, the water spraying supports 601 are of a C-shaped structure with downward openings, two sides of the water spraying supports 601 are respectively positioned at the front side and the rear side of the cabin cover 500 and are supported and fixed on the ground, the middle part of each water spraying support 601 is arranged in a suspended mode and is positioned at the upper part of the cabin cover 500, a water spraying pipe 602 connected with the water spraying supports 601 is arranged on each water spraying support 601, a plurality of spray heads 603 connected with the water spraying pipe 602 are arranged at the lower part of each water spraying pipe 602, the spray heads 603 are uniformly distributed, and the spray heads; meanwhile, the bottom of the device body is positioned in a collecting tank 700, and the water spraying pipe 602 is connected with the inside of the collecting tank 700 through a water pump 604, so that water is recycled in the water spraying process, and the water processed in the collecting tank 700 by the water pump 604 is conveyed to a spraying head 603 for spraying, thereby achieving the purpose of saving water;
in the structure, the spraying area of the spraying head 603 covers the whole upper sheet body of the cabin cover 500, the water flow of the single spraying head 603 is preferably 2-5L/min, the water spraying parameters can be adjusted in a large range by replacing the spraying heads with different specifications, and the loaded state of the cabin cover 500 under the rain can be simulated by controlling the water flow, the flow speed and the water spraying time.
The reliability test device for the large-megawatt wind power cabin cover further comprises a test control system 800, a pressure sensor 202 and a displacement sensor 203, wherein the pressure sensor 202 and the displacement sensor 203 are respectively installed and fixed on the fixed platform 200 through a side bracket 201, namely, the inner side end part of the side bracket 201 is fixedly connected with the fixed platform 200, the outer side end part of the side bracket 201 is fixedly provided with the pressure sensor 202 and the displacement sensor 203, the pressure sensor 202 and the displacement sensor 203 are positioned at the lower parts of the edges of the two sides of the rotating platform 100, and the working end parts of the pressure sensor 202 and the displacement sensor 203 are in contact connection with the bottom surface of the rotating platform 100;
in the above structure, since the fixed platform 200 needs to enter the cabin cover 500, the size thereof is small, and the installation requirements of the pressure sensor 202 and the displacement sensor 203 cannot be met, so that the installation of the pressure sensor 202 and the displacement sensor 203 is met by the side bracket 201, and the position of the pressure sensor 202 and the displacement sensor 203 can be adjusted by the side bracket 201;
the test control system 800 is mainly a computer and necessary data acquisition and signal conversion equipment, and the test control system 800 is connected with the water pump 604, the telescopic driving mechanism 204, the fan body 401, the pressure sensor 202 and the displacement sensor 203 through a control line and a signal line, so that data information can be obtained on one hand, and the start and stop of the water pump 604, the telescopic driving mechanism 204 and the fan body 401 can be controlled on the other hand;
the test control system 800 has the functions of automatically acquiring and storing test parameters;
the fan parameters of the air supply system can be recorded: wind speed, wind quantity, wind direction, starting number and running time;
parameters of the water spraying system can be recorded: flow, number of opened nozzles and running time;
the pressure value, displacement value and the like collected by the pressure sensor 202 and the displacement sensor 203 can be recorded.
The reliability test device for the large-megawatt wind power cabin cover further comprises a counterweight layer 900, wherein the counterweight layer 900 is placed on the top surface of the cabin cover 500, the counterweight layer 900 comprises a plurality of bagged quartz sand, the bagged quartz sand is bound on the cabin cover 500, the thickness of the counterweight layer 900 is 30-200mm, the counterweight layer 900 is used for simulating the thickness of snow on an upper sheet body of the cabin cover 500, and the state that the cabin cover 500 is subjected to snow load is simulated.
To sum up, the reliability test device for the large-megawatt wind power engine room cover integrates a water spraying test, a wind load test, a snow load test and a vibration test into one set of test device, can simulate severe environments such as strong wind, rain, snow and vibration, can detect the fatigue damage form of the engine room cover 500, and is favorable for predicting and evaluating the fatigue life and the reliability.
The above description is only a preferred embodiment of the present invention, and the technical solutions to achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.
Claims (11)
1. The utility model provides a big megawatt wind-powered electricity generation cabin cover reliability test device, includes the device body, its characterized in that: the device body comprises a fixed platform and a rotating platform, wherein the rotating platform is positioned at the upper part of the fixed platform, and the outer side of the rotating platform is used for installing an engine room cover;
the middle of the bottom surface of the rotary platform is rotatably connected with the fixed platform through a connecting mechanism, and two sides of the bottom surface of the rotary platform, which are used for rotating and moving, are respectively connected with the fixed platform through a plurality of groups of elastic supporting assemblies and at least one group of telescopic driving mechanisms.
2. The reliability test device for the large megawatt wind power cabin cover according to claim 1, characterized in that: the fan housing is respectively positioned at two sides of the rotary platform and towards the air outlet of the fan housing, and the rotary platform is arranged.
3. The reliability test device for the large megawatt wind power cabin cover according to claim 2, characterized in that: the fan body adopts a variable speed fan.
4. The reliability test device for the large megawatt wind power cabin cover according to claim 1, characterized in that: still included the trickle system, the trickle system is including being located the trickle support in device body upper portion and outside is equipped with the trickle pipe rather than being connected on the trickle support, and the trickle pipe lower part is equipped with a plurality of shower heads rather than being connected, and the shower head is located rotary platform upper portion.
5. The reliability test device for the large megawatt wind power cabin cover according to claim 1, characterized in that: the bottom of the device body is located in a water collecting tank, and the water spraying pipe is connected with the water collecting tank through a water pump.
6. The reliability test device for the large megawatt wind power cabin cover according to claim 1, characterized in that: the connecting mechanism comprises a rotating shaft and a plurality of bearing supports which are rotatably connected with the outer side of the rotating shaft, two ends of the rotating shaft are respectively connected with the fixed platform, and the bearing supports are connected with the bottom surface of the rotating platform.
7. The reliability test device for the large megawatt wind power cabin cover according to claim 1, characterized in that: the outer side of the rotating platform is provided with a plurality of supporting seats connected with the rotating platform, and the supporting seats are used for being connected with the inner wall of the cabin cover.
8. The reliability test device for the large megawatt wind power cabin cover according to claim 1, characterized in that: still included pressure sensor and displacement sensor, pressure sensor and displacement sensor installation are fixed on the fixed platform, pressure sensor and displacement sensor are located rotary platform both sides edge lower part, and pressure sensor and displacement sensor's operation tip with rotary platform bottom surface contact is connected.
9. The reliability test device for the large megawatt wind power cabin cover according to claim 8, characterized in that: the pressure sensor and the displacement sensor are respectively installed and fixed on a side support, and the side support is fixedly connected with the fixed platform.
10. The reliability test device for the large megawatt wind power cabin cover according to claim 1, characterized in that: the aircraft cabin cover further comprises a counterweight layer, and the counterweight layer is placed on the top surface of the cabin cover.
11. The reliability testing device for the large megawatt wind power engine room cover according to claim 10, characterized in that: the counterweight layer comprises a plurality of bagged quartz sand, the bagged quartz sand is bound on the cabin cover, and the thickness of the counterweight layer is 30-200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010435757.9A CN111594393A (en) | 2020-05-21 | 2020-05-21 | Reliability test device for large-megawatt wind power cabin cover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010435757.9A CN111594393A (en) | 2020-05-21 | 2020-05-21 | Reliability test device for large-megawatt wind power cabin cover |
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| CN111594393A true CN111594393A (en) | 2020-08-28 |
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| CN202010435757.9A Pending CN111594393A (en) | 2020-05-21 | 2020-05-21 | Reliability test device for large-megawatt wind power cabin cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554278A (en) * | 2024-01-12 | 2024-02-13 | 江苏常友环保科技股份有限公司 | Cabin cover weather resistance testing arrangement |
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2020
- 2020-05-21 CN CN202010435757.9A patent/CN111594393A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554278A (en) * | 2024-01-12 | 2024-02-13 | 江苏常友环保科技股份有限公司 | Cabin cover weather resistance testing arrangement |
| CN117554278B (en) * | 2024-01-12 | 2024-03-19 | 江苏常友环保科技股份有限公司 | Cabin cover weather resistance testing arrangement |
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